Cipherly locks messages and files with AES-256, disguises them as innocent emojis, or hides them inside a normal sentence with invisible ink. Paste anything and it auto-detects what it is. Notes live in a fingerprint-locked vault. Everything runs on your phone — no account, no cloud, no tracking. Works fully offline. Free.

Hey Product Hunt 👋 I build free tools at XniperBuilds, and the most-used one was a little text encryptor. People kept asking for the same three things: "can I use it offline", "can it not look encrypted", and "where do I keep all these passwords?" — so I turned it into a proper Android app. Cipherly does three jobs: 🔒 Lock — AES-256 encrypt any message or file with a password. 🙂 Disguise — the locked message can look like a harmless emoji string, or hide inside a normal sentence (invisible ink). 🗄️ Keep — an encrypted vault for notes and passwords, opened with your fingerprint. The part I'm most proud of: paste ANYTHING into decode and it just figures out what it is — cipher text, emojis, invisible ink, Morse, binary. No menus. Everything is on-device. No account, no server, no analytics. It even works in airplane mode. It's free — I'd genuinely love to hear what's missing or confusing. Ask me anything, I'll be here all day.

fully offline + fingerprint-locked vault is the right tradeoff for this category, most "secure notes" apps quietly want an account and a cloud sync which defeats half the point. the emoji/invisible-ink disguise is a fun touch too, curious if that's just steganography on the display layer or if the disguised output is actually safe to paste into places that strip unicode/formatting

how well does the invisible ink method hold up if someone just selects all and copies the text?

Cipherly

Encrypt, disguise and hide messages — 100% offline

Encrypt, disguise and hide messages — 100% offline